Constantin Stefan

Amplo SA engages in the manufacture and trade of instruments and appliances for measuring, testing, and navigation. It offers hoses, bellows, and compensating devices, instrumentation and automation apparatus, joining elements, machinery and stainless steel parts, heat exchangers, and drilling equipment for mining, as well as and technical support and repair works. The company was founded in 1952 and is headquartered in Ploiesti, Romania.

Elars SA engages in the manufacture of fasteners and screw machine products. It offers screws, studs, washers, rivets, and tools, as well as thermal and thermochemical treatment solutions, grinding, drilling, and boring works, production of profiled blades and prismatic knives, and electrical discharge machining services. The company was founded in 1977 and is headquartered in Râmnicu Sarat, Romania.

Transtec SA engages in the provision of freight and passenger transport services. It offers technical inspection works, car maintenance and repair solutions, parking, and warehousing. The company was founded in 1965 and is headquartered in Tecuci, Romania.